Finding the Fourth Proportional to 2,020.84, 3,031.32 and 787.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.84 : 3,031.32 = 787.96 : x
2. Step 2: Convert to fraction form
   2,020.84/3,031.32 = 787.96/x
3. Step 3: Cross multiply
   2,020.84x = 3,031.32 × 787.96
4. Step 4: Simplify right side
   2,020.84x = 2,388,558.91
5. Step 5: Solve for x
   x = 2,388,558.91/2,020.84
6. Step 6: Final answer
   x = 1,181.96